﻿//
// Authors:
//   Ben Motmans  <ben.motmans@gmail.com>
//
// Copyright (c) 2007 Ben Motmans
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//

using System;
using System.Collections;
using System.Collections.Generic;

namespace MonoDevelop.Database.Sql
{
	public sealed class ConstraintSchemaCollection : SortedCollectionBase<ConstraintSchema>
	{
		public ConstraintSchemaCollection ()
			: base (true)
		{
		}
		
		public ConstraintSchemaCollection (ConstraintSchemaCollection collection)
			: base (collection, true)
		{
		}
		
		public ConstraintSchema GetConstraint (ConstraintType type)
		{
			foreach (ConstraintSchema item in List) {
				if (item.ConstraintType == type)
					return item;
			}
			return null;
		}
		
		public IEnumerable<ConstraintSchema> GetConstraints (ConstraintType type)
		{
			foreach (ConstraintSchema item in List) {
				if (item.ConstraintType == type)
					yield return item;
			}
		}
		
		public ConstraintSchema GetConstraintWithColumn (string columnName)
		{
			foreach (ConstraintSchema item in List) {
				foreach (ColumnSchema column in item.Columns) {
					if (column.Name == columnName)
						return item;
				}
			}
			return null;
		}
	}
}